Search results for "Aplysiidae"

showing 2 items of 2 documents

First record of Aplysia dactylomela (Opisthobranchia: Aplysiidae) from the Egadi Islands (western Sicily)

2014

The alien mollusc Aplysia dactylomela is recorded for the first time from the Egadi Islands marine protected area (western Sicily). This species has been widely reported in the Mediterranean and has established populations in Sicily. The presence of a few specimens let us suppose that its occurrence in this area is a recent event and that soon new populations will be sighted in the whole Egadi Islands and on the western and southern coasts of Sicily.

Mediterranean climateEcologybiologySettore BIO/02 - Botanica SistematicaSettore BIO/05 - ZoologiaOpisthobranchiaMediterranean Sea western Sicily Egadi Islands marine protected area biological invasions Mollusca Aplysia dactylomelaAlienAplysiidaeAquatic ScienceOceanographybiology.organism_classificationAplysia dactylomelaFisheryMediterranean seaMarine protected areaMolluscaEcology Evolution Behavior and SystematicsMarine Biodiversity Records
researchProduct

Spermatocyte Chromosomes in Some Species of the Family Aplysiidae (Gastropoda, Opisthobranchia)

1982

SUMMARYCounting spermatocyte bivalents, we have determined the haploid number n = 16 for Aplysia depilans and A. punctata, and n = 17 for A. limacina. We have confirmed n = 17 for Bursatella leachii. Male diakinetic bivalents are probably chiasmatic in all the species examined. The orders Nudibranchia and Notaspidea, possessing haploid values of 13 and 12 chromosomes respectively, seem to be more evolved than the other orders of the sub-class Opisthobranchia.

biologyAplysia depilansBotanyGastropodaGeneticsOpisthobranchiaAplysiidaeLimacinaBursatella leachiiPloidyGeneral Agricultural and Biological Sciencesbiology.organism_classificationNotaspideaCaryologia
researchProduct